JP3278775B2 - Speaker mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker mounting structure capable of suppressing sound generated by a box body or a shielding plate due to vibration of a speaker.

[0002]

2. Description of the Related Art The phenomenon that mechanical vibration is converted into sound when transmitted to an object having appropriate hardness, shape, and size is caused by string instruments,
Although it is actively used in musical instruments such as pianos, it is well known that the quality of sound as musical instruments varies very slightly depending on the material, size, shape, and the like of an object.

FIG. 6 shows a conventional example in which a shielding plate 2 is fixed to a box body 1 and a speaker 3 is attached to the shielding plate 2, and FIG. 7 is a cross-sectional view thereof, and 9 is a box body 1 and a shielding plate. 2
2 shows the sound absorbing material attached to the inner surface of the horn. FIG. 8 shows that the speaker 3 is not fixed to the shielding plate 2 but the magnetic circuit portion 3A of the speaker 3 is supported by the columns 10 and 10A.
In this method, the mechanical vibration of the loudspeaker 3 is transmitted to the box body 1 to be acoustic, and has no effect.

[0004] On the other hand, the phenomenon in which the mechanical vibration changes into sound depending on the material, shape, size, etc. of the box or shield plate on which the speaker is mounted is possible for a speaker that faithfully reproduces an electric signal into sound. Although it has to be eliminated as much as possible, since there has been no effective method so far, the material, structure, shape, etc. of the speaker box must be carefully selected and strictly adjusted. Here, an object of the present invention is to make it possible to accurately exclude mechanical vibration of a speaker from being transmitted to a box or a shield plate and becoming sound.

In order to eliminate the interference of sound waves from the front and rear of the diaphragm of the speaker, it is necessary to attach the speaker to a box or a shielding plate having a certain area or more to block the space before and after the diaphragm of the speaker. General. At this time, the speaker receives a reaction of vibration of the diaphragm other than the vibration of the diaphragm, etc.
The whole structure of the speaker vibrates, and this vibration is transmitted to the box or the shielding plate, and generates sound other than that generated by the diaphragm of the speaker, thereby preventing faithful reproduction.

As a method of suppressing the sound generated by the box body or the shield plate due to the vibration of the speaker, a felt box in which a frame is wrapped with felt has been proposed, or a shield plate made of a stone material such as granite has been used. . However, felt boxes are structurally inferior in strength and cannot be designed as furniture furniture. Further, the stone shield plate becomes excessively heavy, and is difficult and expensive to process.

[0007]

Therefore, according to the present invention, it is possible to suppress the sound emitted from the box body or the shielding plate due to the vibration of the speaker by using the conventionally used wood or the processed wood such as the plywood. It is intended to realize a speaker mounting structure.

[0008]

That is, according to the present invention, in the speaker mounting structure according to the first aspect, when the speaker (3) is mounted and fixed to the box body (1) or the shielding plate (2). The mounting plate (4) directly fixed to the speaker (3) has the flange portion (4A), and the mounting plate (4) directly fixed has the flange portion (4A) and the shielding plate (2). Between the mounting plate (4) and the box back surface (1A) of the box body (1), and a holding plate (6). ) And the flange portion (4A) are also filled with the cushioning material (5A).

According to the speaker mounting structure of the present invention, when the speaker (3) is mounted and fixed to the box body (1) or the shielding plate (2), the mounting is directly fixed to the speaker (3). A plate (4) having a relatively large diameter penetrating the mounting plate (4) through the mounting plate (4) at several equally spaced locations on the circumference of the speaker mounting hole;
These holes are filled with cushioning material (5C), and these cushioning materials (5C) are filled.
C). The pin (7) is driven into the shielding plate (2) through the inside.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Prior to the description of the speaker mounting structure of the present invention, a general speaker mounting structure will be described with reference to FIGS.

In the speaker mounting structure of the present invention shown in FIGS. 1 to 5, FIG. 1 shows an overall view in which the speaker is mounted on a closed box. 1 is the box body of box A,
Reference numeral 2 denotes a shielding plate forming a part of the box A, 3 denotes a speaker, 4
Is a mounting plate to which the speaker 3 is directly fixed, and the speaker 3 is fixed to the mounting plate 4 at four positions. Reference numeral 5 denotes a cushioning material that absorbs vibrations, which is loaded in a gap between the mounting plate 4 and the shielding plate 2.

Next, an embodiment of a mounting structure of the mounting plate 4 to the shielding plate 2 and the box body 1 will be described. At this time, in order to facilitate understanding, illustration of the speaker and the sound absorbing material generally attached to the inner surface of the shielding plate 2 and the box body 1 is omitted, and only the mounting structure is shown using a cross section.

FIG. 2 shows a case where the mounting plate 4 has a shape having a flange portion 4A. In this case, there is a holding plate 6 between the mounting plate 4 and the box rear surface 1A of the box body 1, and the holding plate 6 presses the flange portion 4A of the mounting plate 4 via the buffer material 5A, whereby the mounting plate 4 is fixed to the box body 1. At this time, the flange portion 4A of the mounting plate 4 is also
The cushioning material 5A is loaded so as not to make direct contact with the housing, and the cushioning material 5A is also loaded on the contact surface of the holding plate 6 with the box back surface 1A.

FIG. 3 shows a method of mounting the mounting plate 4 when the shielding plate 2 alone is not provided and the box body 1 is not provided, or when the speaker 3 is lightweight and the holding plate 6 is not used. FIG. 4 is a partial sectional view showing the details. In the mounting plate 4, relatively large-diameter holes are made to penetrate the mounting plate 4 at equal intervals on the circumference of the speaker mounting hole, and these holes are filled with the cushioning material 5C, and the pins 7 are inserted into the holes. Shielding plate 2 penetrating buffer material 5C
Shall be entered.

FIG. 5 shows a structure in which the mounting plate 4 is fixed to the shielding plate 2 by screws 8 from the back side of the shielding plate 2 instead of the holding plate 6 of FIG. 1
FIG. The structure shown in FIG. 5 can also be applied to a case where only the shielding plate 2 is used and the box main body 1 is not provided, similarly to FIG. Reference numeral 5 denotes the same cushioning material as in FIG. 2, and 5D denotes a cushioning material attached to the block 6A. Cushioning material 5A,
5D is preferably a felt.

In any of FIGS. 1 to 5, in order to suppress the vibration from the loudspeaker 3 to the mounting plate 4 on which the loudspeaker is directly mounted, the surface of the mounting plate 4 is made of felt or the like. It is effective to attach and cover the sound absorbing material.

[0017]

As described above, according to the present invention, the speaker is mounted on the box or the shielding plate by temporarily mounting the speaker on the mounting plate and mounting it on the box or the shielding plate via the cushioning material. Suppresses mechanical vibration from being transmitted to the box or shielding plate to produce sound, enabling faithful reproduction of electrical signals to sound without adjusting the material, shape, structure, etc. of the box and shielding plate for each speaker can do.

[Brief description of the drawings]

FIG. 1 is an overall view of a speaker employing a mounting structure of the present invention.

FIG. 2 is an enlarged perspective view showing a shape in which a mounting plate has a flange portion.

FIG. 3 is a partial perspective view of a case where only a shielding plate is not provided and a box body is not provided, or a case where a holding plate is not used.

FIG. 4 is a detailed view of a part of the portion shown in FIG. 3;

FIG. 5 is a perspective view showing a case where a mounting plate is fixed to a shielding plate from behind a shielding plate instead of a holding plate.

FIG. 6 is an overall perspective view of an example of a conventional example.

FIG. 7 is a sectional view of the example shown in FIG. 6;

FIG. 8 is a sectional view showing another example of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box main body 2 Shield plate 3 Speaker 4 Mounting plate 5 Buffer material

Claims (2)

(57) [Claims] When a speaker (3) is mounted and fixed to a box body (1) or a shielding plate (2), a mounting plate (4) directly fixed to the speaker (3) has a flange portion (4A). A cushioning material (5) is sandwiched between the flange portion (4A) and the shielding plate (2), and a mounting plate is provided.
A holding plate (6) is sandwiched between (4) and the back of the box (1A) of the box body (1) , and a cushioning member (6) is also provided between the holding plate (6) and the flange portion (4A). 5A) A mounting structure of a speaker which is filled with the speaker. 2. When the speaker (3) is mounted and fixed to the box body (1) or the shielding plate (2), a mounting plate (4) directly fixed to the speaker (3) is attached to the mounting plate (4). speaker (3) the mounting plate at regular intervals of several locations on a circle circumference of the mounting hole (4) relatively large diameter hole to penetrate through the cushioning material to (5C) was filled in these holes, these The pin (7) is passed through the cushioning material (5C) and the shielding plate (2)
Speaker mounting structure driven into